Abstract
A cornstalk-degrading bacterial consortium was constructed from a cold region of China. Soil and cornstalks samples were screened using lignin or cellulose as sole carbon source to obtain individual bacterial strains. Additionally, a bottom-up strategy was used to construct a bacterial consortium composed of six strains with a synergistic enzymatic pattern, resulting in a cornstalk weight loss of 43.62%, which was 15.08 percentage points higher than the control. Lignin, cellulose, and hemicellulose components of cornstalk, respectively, lost 52.40%, 41.24%, and 45.97% of their weight at 15 °C soil conditions and within a 40 days period. This was significantly higher than the control treatment, especially for the lignin component. The consortium was composed of Bacillus subtilis, Pseudomonas sp., Citrobacter portucalensis, B. thuringiensis, P. putida, Acinetobacter lwoffii.
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